package day12;

public class TestArgs3 {
    public static void main(String[] args) {
        String a = "O";
        String b = "K";
        change(a,b);

        System.out.print(a + "\t" + b);
    }

    public static void change(String a, String b){
        String z = a;
        a = b;
        b = z;
    }
}
